Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Preferred stock par value (in Dollars per share)	$ 0.005	$ 0.005
Preferred stock, shares authorized	10,000,000us-gaap_PreferredStockSharesAuthorized	10,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Common stock, par value (in Dollars per share)	$ 0.005	$ 0.005
Common stock, shares authorized	100,000,000us-gaap_CommonStockSharesAuthorized	100,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	37,159,815us-gaap_CommonStockSharesIssued	34,926,136us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	37,056,215us-gaap_CommonStockSharesOutstanding	34,822,536us-gaap_CommonStockSharesOutstanding
Treasury stock	103,600us-gaap_TreasuryStockShares	103,600us-gaap_TreasuryStockShares

Face amount or stated value per share of common stock.

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